What and where is the dark side of the moon?

Have you noticed that when you look up at the moon, you always see the same features? You can see craters and patches of different colors, but you’re always seeing the same landscape. What’s on the other side of the moon?

Many people use the phrase “the dark side of the moon” to describe something mysterious and unknown. The dark side of the moon is supposed to be the side we never see, the side that faces away from Earth. This side of the moon faces the cold, black expanse of space. What could be on this side of the moon?